Published On: Sat, Nov 29th, 2014

Common Smelt – Retropinna-retropinna – is better known in Canterbury as a silvery

 A freshly caught Common Smelt is almost transparent.

A freshly caught Common Smelt is almost transparent.

Smelt or silveries

Better known in Canterbury as a silvery, common smelt have a distinct cucumber smell when freshly caught. It measures around 8 to 13cm in length and it’s lower body is almost transparent while the sides are silver and the upper body is darker in colour. They are found all around New Zealand’s coastline.

They enter rivers and estuaries from the sea; and have a life-cycle very similar to galaxiids (whitebait). It migrates from the sea into river estuaries to spawn and in lakes make a similar migration to feeder streams to spawn. There is also a very similar species called Stokell’s smelt – Stokellia anisodon.They both have the same distinct cucumber smell. Common smelt are caught in whitebait nets as, a usually unwanted, bi-catch. They are more prevalent towards the end of the whitebait season during November. However dipped in flower and cooked in butter they are very good eating. There have been attempts made in the past to catch large numbers of smelt and dry them in the sun.

Gulls chasing and feeding on smelt in the lower Rakaia River.

Gulls chasing and feeding on smelt in the lower Rakaia River.

Common smelt were successfully introduced into New Zealand inland lakes by acclimatization societies many decades ago as a forage fish for brown and rainbow trout. These released smelt have formed self-sustaining populations and provide a significant food source for trout in some New Zealand lakes, most notably Lake Taupo. However records of such releases are poor so it is difficult to tell which lakes have natural populations of smelt and which lakes have introduced smelt.

According to the late Ron McDowall, in Gamekeepers for the Nation, “it is probably only in the lakes of the central North Island that smelt are abundant enough to constitute an important food for trout.” He also stated that “smelt are arguably the main food source of the trout fisheries of the central North island, which would probably be only a shadow of their present value without them.” However it is certain that there are landlocked populations of smelt in lakes the length of New Zealand, such as Lake Omapere, near Kaitaia to Lake Manapouri, in Fiordland.

Smelt are found well up New Zealand rivers from North Auckland down to the bottom of the South Island’s West Coast. When river and lake fishing from shore it is not unusual to see large shoals of smelt swimming past.

 Top the Common Smelt and below it a Hopes Silvery trout lure.

Top the Common Smelt and below it a Hopes Silvery trout lure.

The old time Maori were very fond of smelt. They would dry them in the sun and store them for later use as food. The Maori name for smelt is pōrohe or paraki.

You don’t see it much nowadays but I remember several decades ago sea-run trout anglers in the lower Waimakariri River would use lip hooked smelt a live-bait to very good effect. A couple of dozen silveries, as they are almost always called in Canterbury, in a bucket make a good supply for an evening’s fishing. They were lip hooked and allowed to drift down a riffle over the drop-off into deeper water where they would be taken readily by the bright silver coloured sea-run brown trout. A more modern smelt pattern for trout is the Silicon Smelt tied with pearl Mylar.

Silveries taken as bi-catch in a whitebaiter's net.

Silveries taken as bi-catch in a whitebaiter’s net.

For those anglers unwilling to resort to using real smelt as trout bait there are various artificial trout flies (also called lures) that are tied to imitate them. Popular with anglers in Canterbury is the Hopes, and a host of other Canterbury Silvery Patterns. It is not unusual to “spear” a smelt when retrieving your lure or fly when fishing for sea-run trout in the lower reaches of rivers.

About the Author

- Fishingmag.co.nz website editor.

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